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7x+3(4x-1)=-78
We simplify the equation to the form, which is simple to understand
7x+3(4x-1)=-78
Reorder the terms in parentheses
7x+(+12x-3)=-78
Remove unnecessary parentheses
+7x+12x-3=-78
We move all terms containing x to the left and all other terms to the right.
+7x+12x=-78+3
We simplify left and right side of the equation.
+19x=-75
We divide both sides of the equation by 19 to get x.
x=-3.94736842105
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